In the Circles system, you can pay people who belong to your trust network. This means, you can pay people you trust directly, and you can also pay the trusted connections of these people. This is what we call “the trust path”, or “transitive transactions''. You can read more about it in our whitepaper.
In order to receive payment from someone, you may have to trust them first if there’s no trust path between you and them. Money can flow in the opposite direction of trust too.
To check who’s in your trust network, go to your circles.garden Wallet.